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  <h1 class="title">简介</h1>
  <p class="para">
   This extension provides access to the functionality of messaging and
   queueing systems, such as the IBM WebSphere MQSeries family of products,
   from PHP scripts. The interface is designed to make it extremely simple
   to do the more commonly required tasks such as deliver simple text
   messages to queues while still allowing skilled users to do more complex
   messaging operations. For many users the complexities of setting up
   numerous options can be simply ignored.
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  <p class="para">
   The SAM extension is a framework that provides a very simple API that can be used to
   access a number of messaging middleware systems. Currently the package
   includes built-in support for the MQTT (MQ Telemetry Transport) messaging protocol and support for the IBM
   Messaging and Queuing middleware products. SAM is designed to be readily extended to
   support other messaging systems and extension modules may be written in C or PHP.
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